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Latest Quaternary glaciation Stories

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2008-02-28 15:00:00

Each year, long-distance winds drop up to 900 million tons of dust from deserts and other parts of the land into the oceans. Scientists suspect this phenomenon connects to global climate - but exactly how, remains a question. Now a big piece of the puzzle has fallen into place, with a study showing that the amount of dust entering the equatorial Pacific peaks sharply during repeated ice ages, then declines when climate warms. The researchers say it cements the theory that atmospheric...

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2006-07-28 14:06:08

The Earth Institute at Columbia University -- Each year nearly 40,000 tons of cosmic dust fall to Earth from outer space. Now, the first successful chronological study of extraterrestrial dust in Antarctic ice has shown that this amount has remained largely constant over the past 30,000 years, a finding that could help refine efforts to understand the timing and effects of changes in the Earth's past climate. The same study also used an improved analytical technique to show that dust carried...

2006-05-31 04:50:00

By Alister Doyle, Environment Correspondent OSLO -- Global warming is adding new threats to marine life in the almost land-locked Baltic Sea, where fish are already struggling in polluted, brackish waters, a leading expert said on Wednesday. "The Baltic Sea is already in bad shape ... life there is in a very delicate balance," Hans von Storch, a professor at the Institute of Coastal Research in Germany who chairs a group of 80 scientists from 12 nations studying the Baltic, told Reuters....

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2006-01-10 05:45:00

NASA -- New scientific findings are strengthening the case that the oceans and climate are linked in an intricate dance, and that rapid climate change may be related to how vigorously ocean currents move heat between low and high latitudes. The research, by Candace Major, an investigator at Woods Hole Oceanographic Institution, was presented today at a press conference at the fall meeting of the American Geophysical Union in San Francisco. In the North Atlantic region, the glacial climate...

2005-11-30 13:04:02

By Jeremy Lovell LONDON (Reuters) - The Atlantic Conveyor, a life-giving ocean current that keeps northern Europe warm, is slowing down, scientists said on Wednesday. If the 30 percent slowdown seen over the past 12 years is not just a blip, temperatures in northern Europe could drop significantly, despite global warming, they added. Scientists have long forecast that the Atlantic Conveyor that carries warm surface water north and cold deep water back to the equator could break down...

2005-11-30 13:00:00

By Jeremy Lovell LONDON (Reuters) - The Atlantic Conveyor, a life-giving ocean current that keeps northern Europe warm, is slowing down, scientists said on Wednesday. If the 30 percent slowdown seen over the past 12 years is not just a blip, temperatures in northern Europe could drop significantly, despite global warming, they added. Scientists have long forecast that the Atlantic Conveyor that carries warm surface water north and cold deep water back to the equator could break down because...

2005-10-19 14:30:26

The ice ages made massive changes to the Earth's landscape The ice ages made massive changes to the Earth's landscape. But what was happening below the ice in the oceans? Research by marine scientists reveals that it was a time of mass destruction as whole communities of animals were wiped out by ice sheets scouring the sea floor. In the past it has been thought that these ecosystems somehow dodged extinction by recolonising from nearby habitats that escaped obliteration. But researchers at...

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2005-03-30 15:15:00

Tilt is a 100,000-year planetary pacemaker Woods Hole -- Scientists have long debated what causes glacial/interglacial cycles, which have occurred most recently at intervals of about 100,000 years. A new study reported in the March 24 issue of Nature finds that these glacial cycles are paced by variations in the tilt of Earth's axis, and that glaciations end when Earth's tilt is large. With more than 30 explanations proposed for these glacial cycles, researchers at the Woods Hole...


Word of the Day
vermicular
  • Like a worm in form or movement; vermiform; tortuous or sinuous; also, writhing or wriggling.
  • Like the track or trace of a worm; appearing as if worm-eaten; vermiculate.
  • Marked with fine, close-set, wavy or tortuous lines of color; vermiculated.
  • A form of rusticated masonry which is so wrought as to appear thickly indented with worm-tracks.
This word ultimately comes from the Latin 'vermis,' worm.
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